Really? Still? 15 years ago I'd have expected nothing but; even just 7-8 years ago I'd not have been remotely surprised. But everything I've heard seems to suggest the attention-to-detail and "professionalism" (in terms of attention-to-detail) paid to Indian domestic cricket in recent years has improved beyond recognition.
Yes. Every player. Every single one that I have seen talk about it, says so.
Look at RP Singh (as an example). He got to the Test side and played Tests and all of a sudden he went to county cricket and they identified a weakness in his thighs, which they remedied with a proper workout plan and he says it doubled his stamina and endurance. Zaheer Khan would not be half the bowler he is today without Worcestershire, and he says that too.
The problem is there is no accountability. You don't get the job because you're the most qualified, you get it based on who you know. There are ex-Test stars who've come out and said that they have no idea what to do if they want to get involved in their local Test associations unless they personally know the home minister. It's not great, the increased performance of the Indian Test team should not mask the massive shortcomings of the domestic structure.
One of the reasons I like the IPL as I do (not the format mind you, but the concept) is because it's much more transparent and professionally result based. You actually do get people hired based on their qualifications (e.g, the physios, coaches, etc) because only thing that matters is winning (winnings means more $$, and for guys like Mallya - prestige), not satisfying the letters of the chief minister.
County Cricket >>>>>>>>>>>>>>>>> Anything domestic in India.
Anyone who disagrees just needs to spend an hour doing some research on the hilarious things that go on in India.